#892: relief, research, air
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Two relief legend palettes explained: the difference between decorative and perceptive legends
https://clustergis.wordpress.com/2015/04/04/hipsometria-e-hipsografia-v/ -
"Navigae" is a platform for cartography research, allowing to compare maps from different ages
https://www.navigae.fr -
Animated globe to display atmospheric pollution modeled after a network of more than ten thousand sensors
https://www.airvisual.com/earth
Raf